Well my unmatched system sounds better than some people's matched ones for example my friends MTX system is horrible, but this is just mho though, Go with what you want man, like me i have alpine 5 1/4s, diamond audio hex series 6 1/2s, jl 15 w0 8ohm sub all powered by 2 eclipse 33230s, also nakamichi 45Z headunit, oh and can't forget bout my phoenix gold mx3i active crossover, but the whole point is go with what u like and what you can afford, and for sql, mine rocks, not that loud maybe 110 db but sound quality is excellent